is one piece episode 442 filler?

As Luffy made his way to Level 6 with Inazuma and Emporio Ivankov, they were attacked by traps. As they survived the traps, Ivankov used his ability to gender swap a male guard into his true self.

In appreciation, she showed the three prisoners the way to Ace's cage, only to find Jinbe and a pair of empty shackles in there. As the Fish-Man yelled to Luffy to get to the elevator as he could make it in time, the three prisoners were too late.

Luffy was attacked by a spiky object in the elevator shaft. As they headed back to Level 5 the staircase was shut off with bars, leaving no exit.